Study objective Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal lung disease of
unknown etiology. The incidence of IPF increases with age. Aging contributes to lifestyle-
related diseases, including diabetes mellitus (DM); therefore, it is possible that lifestyle-
related diseases may affect either the initiation or progression of IPF. Design Case-control
study. Setting Nippon Medical School and Omiya City Clinic. Patients and participants Sixty-
five consecutive patients with IPF who were admitted to Nippon Medical School Hospital …